class_docstr: The ``DefaultAdapter`` is an :class:`~flash.core.adapter.Adapter`.
class_docstr_tok: ["The","``","DefaultAdapter","``","is","an",":","class",":","`","~flash.core.adapter.Adapter","`","."]
code: def validation_step(self, batch: Any, batch_idx: int) -> Any:
      raise NotImplementedError(
          'Validation an `ImageEmbedder` with `strategy="default"` is not supported. '
          "Use a different strategy instead."
      )
  
file_path: lightning-flash/src/flash/image/embedding/strategies/default.py
imports: import warnings
  from typing import Any, Optional
  from torch import nn
  from flash.core.adapter import Adapter, AdapterTask
  from flash.core.data.io.input import DataKeys
  from flash.core.model import Task
  from flash.core.registry import FlashRegistry
  from flash.core.utilities.url_error import catch_url_error
label_desc: Use image node_id 4 for calling the DefaultAdapter obj's underlying member method code with example usage: obj.validation_step(batch, batch_idx) without return types